﻿//
// Copyright (c) 2011 Canyala Innovation AB
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
// associated documentation files (the "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
// copies of the Software, and to permit persons to whom the Software is furnished to do so, 
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT 
// NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH 
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
//

using System.Text;

namespace Canyala.Lagoon.Models
{
    /// <summary>
    /// Provides a Location composite value type.
    /// </summary>
    public class RowColumn
    {
        public readonly int Row;
        public readonly int Column;

        internal RowColumn(int row, int column)
        {
            Row = row;
            Column = column;
        }

        public static RowColumn Create(int row, int column)
        {
            return new RowColumn(row, column);
        }

        public static RowColumn Empty = new RowColumn(0, 0);
        public static RowColumn[] EmptyArray = new RowColumn[0];

        public override bool Equals(object obj)
        {
            var perspective = obj as RowColumn;
            if (perspective == null) return false;

            if (Row != perspective.Row) return false;
            if (Column != perspective.Column) return false;

            return true;
        }

        public override int GetHashCode()
        {
            return Row.GetHashCode() ^ Column.GetHashCode();
        }

        public override string ToString()
        {
            var builder = new StringBuilder();
            builder.AppendFormat("({0},{1})", Row, Column);
            return builder.ToString();
        }
    }
}
